#c-slider {
    margin: auto;
    margin-top: 20px;
    margin-bottom: 20px;
    width: 640px;
    position: relative;
    overflow: hidden;
    
}

#slider {
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flex;
    display: -o-flex;
    display: flex;
    width: 900%;
}

section {
    width: 300%;
}

#slider img {
    display: block;
    width: 100%;
    height: 100%;
}

#btn-prev, #btn-next {
    width: 40px;
    height: 40px;
    background: rgba(209, 119, 39, 0.6);
    color: white;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    line-height: 40px;
    font-size: 22px;
    font-weight: bold;
    text-align: center;
    font-family: monospace;
    cursor: pointer;
}

#btn-prev:hover, #btn-next:hover {
    color: white;
    background-color: rgba(209, 119, 39, 0.9)
}

#btn-prev {
    left: 10px;
}

#btn-next {
    right: 10px;
}
    

@media(max-width: 700px) {
#c-slider {

    width: 90%;

    
}
  }


@media(max-width: 500px) {
#c-slider {

    width: 100%;

    
}
  }